package gov.nist.javax.sip.parser.extensions;

import gov.nist.javax.sip.header.*;
import gov.nist.javax.sip.header.extensions.*;
import gov.nist.javax.sip.parser.*;

import java.text.ParseException;
import javax.sip.*;

/**
 * Parser for SIP MinSE Parser. 
 * 
 *    Min-SE  =  "Min-SE" HCOLON delta-seconds *(SEMI generic-param)
 *
 * @author P. Musgrave <pmusgrave@newheights.com>
 *
 * <a href="{@docRoot}/uncopyright.html">This code is in the public domain.</a>
 */
public class MinSEParser extends ParametersParser {

	/**
	 * protected constructor.
	 * @param text is the text of the header to parse
	 */
	public MinSEParser(String text) {
		super(text);
	}

	/**
	 * constructor.
	 * @param lexer is the lexer passed in from the enclosing parser.
	 */
	protected MinSEParser(Lexer lexer) {
		super(lexer);
	}

	/**
	 * Parse the header.
	 */
	public SIPHeader parse() throws ParseException {
		MinSE minse = new MinSE();
		if (debug)
			dbg_enter("parse");
		try {
			headerName(TokenTypes.MINSE_TO);

			String nextId = lexer.getNextId();
			try {
				int delta = Integer.parseInt(nextId);
				minse.setExpires(delta);
			} catch (NumberFormatException ex) {
				throw createParseException("bad integer format");
			} catch (InvalidArgumentException ex) {
				throw createParseException(ex.getMessage());
			}
			this.lexer.SPorHT();
			super.parse(minse);
			return minse;
			
		} finally {
			if (debug)
				dbg_leave("parse");
		}

	}
	
	public static void main(String args[]) throws ParseException {
		String to[] =
			{   "Min-SE: 30\n",
				"Min-SE: 45;some-param=somevalue\n",
			};

		for (int i = 0; i < to.length; i++) {
			MinSEParser tp = new MinSEParser(to[i]);
			MinSE t = (MinSE) tp.parse();
			System.out.println("encoded = " + t.encode());
			System.out.println("\ntime=" + t.getExpires() );
			if ( t.getParameter("some-param") != null)
				System.out.println("some-param=" + t.getParameter("some-param") );
			
		}
	}


	

}
